Código 6405: [Channel %1: ] Command %2 has invalid PLC acknowledge parameter %3 - identifier %4
Descripción del problema y advertencia de seguridad
El Siemens SINUMERIK 840D CNC ha desencadenado una alarma crítica [Channel %1: ] Command %2 has invalid PLC acknowledge parameter %3 - identifier %4. Se requiere la atención inmediata de un operador calificado o técnico de mantenimiento para evitar daños secundarios al equipo o piezas estropeadas durante el ciclo de fabricación. Asegúrese siempre de seguir los procedimientos de seguridad estándar y LOTO antes de acceder a los armarios eléctricos.
Pasos oficiales de solución de problemas
Parameters: %1 = Channel ID %2 = Command no. %3 = PLC acknowledge parameter %4 = Error code Definitions: The specified command has been answered by the PLC with an invalid acknowledgement in the current context. The following assignments are defined for "command no.": 1 Move tool, load or unload magazine 2 Prepare tool change 3 Execute tool change 4 Prepare tool change and execute with T command 5 Prepare tool change and execute with M command 7 Terminate canceled tool command 8 Check tool movement with reservation 9 Check tool movement 0 Transport acknowledgement Parameters 2 and 3 designate the PLC command and the status number of the acknowledgement. Example: Parameter 4 of the alarm message is 10. It is not defined that a buffer location has to be reserved for asynchronous tool motion. In the exam ple, the parameter is ignored by the NCK. Further possible causes for the alarm: The tool change defined by the command is not possible. The magazine location specified in the invalid parameter does not exist in the magazine. The 3rd parameter - error identification - gives a more detailed description of the alarm. Meanings: - 0 = not defined - 1 = status not allowed or undefined status received by PLC - 2 = source and/or target magazine no./location no. unknown - 3 = not defined - 4 = target magazine no. and/or location no. ar e not the end target in the tool motion command - 5 = not defined - 6 = source and/or target magazine no./location no. unknown during tool change - 7 = PLC comm. with inconsistent data: either inconsistent magazine addresses in VDI or NCK command unequal to PLC acknowledgement or both - 8 = PLC comm. with inconsistent data: while re jecting a tool, the tool to be rejected was unloaded asynchronously. NCK cannot perform a new selection. - 9 = PLC comm. with inconsistent data: the command acknowledgement data wants to move a tool to a location that is occupied by another tool. - 10 = Asynchronous tool motion with reservation is only defined for the motion from a magazine to a buffer location. Reaction: NC Start disable in this channel. Interface signals are set. Alarm display. NC Stop on alarm. Remedy: Please inform the authorized personnel/service dep artment. Erroneous PLC communication: Correct the PLC program. Program Continuation: Clear alarm with the RESET key. Restart part program
Source: SINUMERIK 840D sl / 840Di sl / SINAMICS S120 Diagnostics Manual (DAsl, 03/2009)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
Acerca de las alarmas de Siemens SINUMERIK 840D CNC
Los controladores industriales construidos por Siemens están diseñados con amplios sistemas de diagnóstico para proteger los circuitos internos y los enlaces mecánicos. Cuando un SINUMERIK 840D CNC arroja un código de error como 6405, generalmente indica un desajuste entre los valores ordenados y la retroalimentación real del sensor.
Lista completa de alarmas: 4014 Siemens SINUMERIK 840D CNC códigos.
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